v3.25.2
Leases - Summary of Movements in Right of Use Assets (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year $ 2,708 $ 2,809  
Additions 870 593  
Remeasurements of index-linked freight contracts (210) 230  
Depreciation expensed during the period (717) (717) $ (533)
Impairments for the year 0 (140)  
Divestment of subsidiaries and operations 0 (70)  
Transfers and other movements 2 3  
At the end of the financial year 2,653 2,708 2,809
Gross carrying amount [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year 5,221    
At the end of the financial year 5,454 5,221  
Accumulated depreciation, amortisation and impairment [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year (2,513)    
At the end of the financial year (2,801) (2,513)  
Land and buildings [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year 490 573  
Additions 26 26  
Remeasurements of index-linked freight contracts 0 0  
Depreciation expensed during the period (75) (79)  
Impairments for the year 0 0  
Divestment of subsidiaries and operations 0 (30)  
Transfers and other movements (2) 0  
At the end of the financial year 439 490 573
Land and buildings [member] | Gross carrying amount [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year 742    
At the end of the financial year 764 742  
Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year (252)    
At the end of the financial year (325) (252)  
Plant and equipment [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year 2,218 2,236  
Additions 844 567  
Remeasurements of index-linked freight contracts (210) 230  
Depreciation expensed during the period (642) (638)  
Impairments for the year 0 (140)  
Divestment of subsidiaries and operations 0 (40)  
Transfers and other movements 4 3  
At the end of the financial year 2,214 2,218 $ 2,236
Plant and equipment [member] | Gross carrying amount [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year 4,479    
At the end of the financial year 4,690 4,479  
Plant and equipment [member] | Accumulated depreciation, amortisation and impairment [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
At the beginning of the financial year (2,261)    
At the end of the financial year $ (2,476) $ (2,261)